CN219035470U - Speed reducer for double-output crane - Google Patents

Abstract

The utility model relates to a speed reducer for a double-output crane, wherein a first input shaft and a second input shaft are connected to the front side of the middle of a box body in a penetrating way, a planetary transmission gear set is arranged on the first input shaft, a first input gear is sleeved at the rear part of a planet carrier, one side of the first input gear is meshed with a first output transmission mechanism, the other side of the first input gear is meshed with a first intermediate gear on a first intermediate shaft, the first intermediate gear is meshed with a second intermediate gear of a second intermediate shaft, the second intermediate gear is meshed with a second input gear of the second input shaft, the second input shaft is meshed with a second intermediate gear on the second intermediate shaft through the second input gear, the second intermediate gear is meshed with a first intermediate gear of the first intermediate shaft, and the first intermediate gear is meshed with the external teeth of the input gear. The planetary reducer has the advantages that the double input and double output can effectively protect the motor on the basis of reducing the speed ratio and improving the torque, and can ensure the lifting safety and improve the operation efficiency.

Description

A reducer for a double output crane

technical field

The utility model relates to the field of reducers, in particular to a reducer for double-output cranes.

Background technique

Existing hoisting machinery often drives a reducer and a reel through a motor, and drives the hook to work up and down through the output shaft running at a low speed, so as to realize the lifting of the object. However, for certain occasions that require two or more hooks to rise and fall at the same time, and require two or more hooks to achieve mechanical synchronization, it cannot be well satisfied.

For example, the Chinese patent CN216235782U discloses a reducer for hoisting machinery. The high-speed shaft rotation of an input shaft drives the synchronous rotation of two low-speed output shafts, so that the two output shafts can drive two reels to wind two Or two or more hooks work synchronously. Although it realizes the synchronous operation of two or more hooks, the input shaft has only one end. In the application of high-power equipment, only the output shaft at one end is connected to the input equipment. For the role of the reducer to increase the torque through deceleration It often seems powerless, and in order to achieve a high deceleration effect, it still needs to be used together with other reducers. Sometimes the space is limited and cannot be used together, and the lifting object can only be put on hold, which affects the operation process. Accidents caused by unbalanced lifting equipment still need to wait for repairs on the basis of handling the lifting objects, and the existing reducer cannot solve the above problems.

Contents of the invention

The utility model provides a double-input and double-output double-output reducer for cranes, which can effectively protect the motor on the basis of reducing the speed ratio and increasing the torque, and can ensure the safety of lifting and improve the working efficiency.

The technical solution adopted by the utility model is: a double-output crane reducer, including a box body, characterized in that: the front side of the middle part of the box body is pierced with first and second input shafts, and the first input shaft is provided with There is a planetary transmission gear set. The planetary transmission gear set includes a sun gear, a planetary carrier, a planetary shaft, a planetary wheel, an input gear, and a hub. The planetary frame is connected to the first input shaft through a bearing. The sun gear and the planetary shaft on the first input shaft The planetary gear on the planetary gear meshes, the planetary shaft passes through the planetary carrier, the planetary gear meshes with the internal teeth of the input gear, the input gear is fixed on the hub through a pin, the hub is sleeved on the front part of the planetary carrier through a bearing, and the rear part of the planetary carrier There is a first input gear, one side of the first input gear meshes with the first output transmission mechanism, and the other side meshes with the first intermediate gear on the first intermediate shaft, and the first intermediate gear meshes with the second intermediate gear of the second intermediate shaft The second intermediate gear meshes with the second input gear of the second input shaft, and the second input gear meshes with the second output transmission mechanism. The second input shaft connects with the second intermediate gear on the second intermediate shaft through the second input gear Gear meshing, the second intermediate gear engages the first intermediate gear of the first intermediate shaft, and the first intermediate gear engages the external teeth of the input gear; the first output transmission mechanism and the second output transmission mechanism are arranged symmetrically, the first and second The output transmission mechanisms all include a first intermediate output shaft, a first intermediate output gear, a second intermediate output shaft, a second intermediate output gear, an output shaft, and an output gear. The first intermediate output shaft meshes with the second intermediate output gear through the first intermediate output gear. The second intermediate output gear on the intermediate output shaft, the second intermediate output shaft meshes with the output gear on the output shaft through the second intermediate output gear, the first intermediate output shaft is also provided with a first intermediate output gear, the first output The first intermediate output gear in the transmission mechanism meshes with the first input gear, and the first intermediate output gear in the second output transmission mechanism meshes with the second input gear.

Further, the first input gear is socketed on the planet carrier via a key.

Further, the planet carrier is in interference fit with the first input gear.

Further, the planetary shaft is limited on the planetary carrier via a pin shaft.

Further, the outputs of the first and second output transmission mechanisms are connected on the same side or different sides of the box body.

Based on the above scheme, the utility model has achieved the following positive and beneficial effects:

1. When the first input shaft is input, the sun gear meshes with the planetary gear, and the planetary gear drives the first input gear on the planet carrier through the planetary shaft, and the two sides of the first input gear are respectively transmitted to the first and second output transmission mechanisms. Output shaft; when the second input shaft is input, the second input shaft is respectively transmitted to the output shafts in the first and second output transmission mechanisms through both sides of the second input gear, at this time, the second input gear and the second intermediate shaft The second intermediate gear meshes and is transmitted to the input gear on the planet carrier of the first input shaft. At this time, the first input shaft does not rotate, which protects the motor; when one of the input shafts fails, the other input shaft can be activated to ensure It not only improves the operation safety, but also saves the operation time and improves the work efficiency.

2. When the first and second input shafts are input at the same time, the input speed ratio can be effectively reduced and the torque can be increased without adding other reducers to lift large equipment.

Description of drawings

Fig. 1 is the utility model top view structure schematic diagram;

Fig. 2 is a structural schematic diagram of the first output transmission mechanism of the utility model;

Fig. 3 is a schematic diagram of the enlarged structure at A in Fig. 1 of the present utility model.

In the figure: box body 1, first input shaft 2, second input shaft 3, planetary transmission gear set 4, sun gear 401, planet carrier 402, planet shaft 403, planet gear 404, input gear 405, wheel hub 406, first Input gear 5, first output transmission mechanism 6, second output transmission mechanism 7, first intermediate shaft 8, first intermediate gear 9, second intermediate shaft 10, second intermediate gear 11, second input gear 12, output gear 13. The first intermediate output shaft 14 , the first intermediate output gear 15 , the second intermediate output shaft 16 , the second intermediate output gear 17 , and the output shaft 18 .

Detailed ways

Further description will be made below in conjunction with drawings and embodiments.

Please refer to Figures 1 to 3, the utility model provides a technical solution: a double-output crane reducer, including a box body 1, a first input shaft 2, a second input shaft 3, a planetary transmission gear set 4 and a first input Gear 5 , first output transmission mechanism 6 , second output transmission mechanism 7 , first intermediate shaft 8 , first intermediate gear 9 , second intermediate shaft 10 , second intermediate gear 11 , and second input gear 12 . The first output transmission mechanism 6 and the second output transmission mechanism 7 are symmetrically arranged in the box, (see Figure 1) the first and second output transmission mechanisms both include the first intermediate output shaft 14, the first intermediate output gear 15, the second The intermediate output shaft 16, the second intermediate output gear 17, the output shaft 18, the output gear 13, the first or the second output transmission mechanism are arranged as follows: the first intermediate output shaft 14 is provided with the first intermediate output gear 15, the first intermediate The output shaft 14 meshes with the second intermediate output gear 17 on the second intermediate output shaft 16 through the first intermediate output gear, and the second intermediate output shaft meshes with the output gear 13 on the output shaft 18 through the second intermediate output gear, and the output The shaft extends out of the front side of the box to connect to the output. (See Figure 2) The first and second input shafts are connected through the front side of the middle part of the box body 1. The planetary transmission gear set 4 is provided on the first input shaft 2. The planetary transmission gear set includes a sun gear 401, a planetary carrier 402, and a planetary transmission gear set. Shaft 403, planetary gear 404, input gear 405, wheel hub 406, the sun gear on the first input shaft meshes with the planetary gear on the planetary shaft, the planetary shaft is connected to the planetary carrier, the planetary shaft is limited by the pin shaft, and the planetary gear 404 It meshes with the internal teeth of the input gear 405, and the input gear is fixed on the hub 406 through a pin, and the hub is sleeved on the front part of the planet carrier 402 through a bearing, (see Figure 3) The rear part of the planet carrier is covered with the first input gear 5 through a key , one side of the first input gear meshes with the first intermediate output gear 15 in the first output transmission mechanism 6, and is transmitted to the output shaft in the first output transmission mechanism 6, and the other side meshes with the first intermediate output gear 15 on the first intermediate shaft 8. The intermediate gear 9 meshes, the first intermediate gear meshes with the second intermediate gear portion of the second intermediate shaft 10, the second intermediate gear portion meshes with the second input gear 12 of the second input shaft 3, and the second input gear meshes with the second output transmission mechanism The first intermediate output gear 15 in 7 is transmitted to the output shaft in the second output transmission mechanism, (see Figure 1) the first input shaft drives the output shaft in the first and second output transmission mechanisms.

When the first shaft fails, the second input shaft can be activated, which saves maintenance work time and improves work efficiency. The second input shaft 3 meshes with the second intermediate gear 11 on the second intermediate shaft 10 through the second input gear, the second intermediate gear meshes with the first intermediate gear of the first intermediate shaft 8, and the first intermediate gear meshes with the input The outer teeth of the gear 405, the first input shaft 2 will not rotate at this time, thereby protecting the motor; the second input shaft 3 is also provided with a second input gear 12, and one side of the second input gear meshes with the second output transmission mechanism 7 The first intermediate output gear 15 in the middle is transmitted to the output shaft in the second output transmission mechanism, and the other side meshes with the second intermediate gear portion of the second intermediate shaft 10, and the second intermediate gear portion meshes with the first intermediate shaft 8 The first intermediate gear 9 is engaged with the first input gear 5 sleeved on the planet carrier, and the first input gear is engaged with the first intermediate output gear 15 in the first output transmission mechanism 6 . (see picture 1)

When the first and second input shafts input at the same time, the input speed ratio can be effectively reduced and the torque can be increased.

On the basis of this embodiment, an interference fit between the planet carrier and the first input gear can also be used.

On the basis of this embodiment, the outputs of the first and second output transmission mechanisms can also be connected on the same side or different sides of the box body.

Claims (5)

1. The utility model provides a speed reducer for dual output crane, includes box, its characterized in that: the front side of the middle part of the box body is connected with a first input shaft and a second input shaft in a penetrating way, the first input shaft is provided with a planetary transmission gear set, the planetary transmission gear set comprises a sun gear, a planet carrier, a planet wheel, an input gear and a hub, the planet carrier is sleeved with the first input shaft through a bearing, the sun gear on the first input shaft is meshed with the planet wheel on the planet carrier, the planet shaft is connected with the planet carrier in a penetrating way, the planet wheel is meshed with the inner teeth of the input gear, the input gear is fixed on the hub through pins, the hub is sleeved on the front part of the planet carrier through a bearing, the rear part of the planet carrier is sleeved with the first input gear, one side of the first input gear is meshed with a first output transmission mechanism, the other side of the first input gear is meshed with a first intermediate gear on the first intermediate shaft, the first intermediate gear is meshed with a second intermediate gear on the second intermediate shaft, the second input gear is meshed with a second output transmission mechanism through the second intermediate gear on the second intermediate shaft, and the second intermediate gear is meshed with the first intermediate gear on the first intermediate gear of the first intermediate shaft; the first output transmission mechanism and the second output transmission mechanism are symmetrically arranged, the first output transmission mechanism and the second output transmission mechanism respectively comprise a first middle output shaft, a first middle output gear, a second middle output shaft, a second middle output gear, an output shaft and an output gear, the first middle output shaft is meshed with the second middle output gear on the second middle output shaft through a first middle output tooth part, the second middle output shaft is meshed with the output gear on the output shaft through a second middle output tooth part, the first middle output gear is further arranged on the first middle output shaft, the first middle output gear in the first output transmission mechanism is meshed with the first input gear, and the first middle output gear in the second output transmission mechanism is meshed with the second input gear.

2. The speed reducer for a double-output crane according to claim 1, characterized in that: the first input gear is sleeved on the planet carrier through a key.

3. The speed reducer for a double-output crane according to claim 1, characterized in that: the planet carrier is in interference fit with the first input gear.

4. The speed reducer for a double-output crane according to claim 1, characterized in that: one side of the planetary shaft is limited on the planetary frame through a distribution shaft.

5. The speed reducer for a double-output crane according to claim 1, characterized in that: the output of the first output transmission mechanism and the output of the second output transmission mechanism are connected to the same side or different sides of the box body.

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